<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8" />
<link rel="help" href="http://www.w3.org/TR/resource-timing/#performanceresourcetiming"/>
<title>This test validates that resource timing implementations have a finite number of entries in their buffer.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<script>
    const t = async_test("Default resource timing entries buffer size");
    const default_buffer_size = 250;
    performance.onresourcetimingbufferfull = t.step_func_done(function() {
        assert_equals(performance.getEntriesByType("resource").length, default_buffer_size);
    });
    window.onload = t.step_func(
        function() {
            // Scripts appended in JS to ensure setResourceTimingBufferSize is called before.
            let counter = performance.getEntriesByType("resource").length;
            const documentFragment = document.createDocumentFragment();
            while (counter <= default_buffer_size) {
                const src = "../loading/resources/empty.js?" + counter;
                const script = document.createElement('script');
                script.type = 'text/javascript';
                script.src = src;
                documentFragment.appendChild(script);
                ++counter;
            }
            document.body.appendChild(documentFragment);
        });
</script>
</body>
</html>
